饱和淤泥爆炸排水固结试验研究

对采用爆炸排水固结法处理淤泥类软土地基进行了试验论证.爆炸试验表明,水平向应力波对土体排水的贡献大于竖向应力波,缩短排水距离有利于土体的排水固结,炸药用量对试验有很大影响.直剪试验显示爆炸后土体粘聚力和内摩擦角较爆炸前均明显改善.爆炸后土体含水量显著降低.试验还得到了爆炸后土体出水量与时间的关系曲线,从几个方面证实了饱和淤泥爆炸排水固结处理软土地基方法的可行性.试验结果与理论分析相吻合.

Experimental research on drainage and consolidation of ooze mud by blasting method

The test on drainage and consolidation by blasting method to treat sludge soft foundation was carried out.The blasting test demonstrates that the horizontal stress wave contributes more to water drainage than vertical stress wave,reducing water drainage distance is favorable to squeezing water and consolidation of soil,the blasting powder amount influences test result greatly.Direct shear test demonstrates that the cohesive force and internal friction angle of soil after blasting are increased significantly compared with those before blasting.The water content of soil is reduced significantly after blasting.The relation curve of soil water yield and time is also obtained.The feasibility of saturated ooze mud water drainage and consolidation by blasting method to treat soft foundation is verified from several aspects.The test result is coincided with theoretical analysis.